frontend/plugin_lib.c

   1 /*
   2  * (C) notaz, 2010
   3  *
   4  * This work is licensed under the terms of the GNU GPLv2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <stdarg.h>
  12 #include <stdint.h>
  13 #include <sys/time.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #include <fcntl.h>
  17 #include <unistd.h>
  18 #include <pthread.h>
  19
  20 #include "plugin_lib.h"
  21 #include "linux/fbdev.h"
  22 #include "common/fonts.h"
  23 #include "common/input.h"
  24 #include "omap.h"
  25 #include "menu.h"
  26 #include "pcnt.h"
  27 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
  28 #include "../libpcsxcore/psemu_plugin_defs.h"
  29
  30 void *pl_fbdev_buf;
  31 int pl_frame_interval;
  32 int in_type, in_keystate, in_a1[2], in_a2[2];
  33 static int pl_fbdev_w, pl_fbdev_h, pl_fbdev_bpp;
  34 static int flip_cnt, vsync_cnt, flips_per_sec, tick_per_sec;
  35 static float vsps_cur;
  36 static int plugin_skip_advice;
  37 // P.E.Op.S.
  38 extern int UseFrameSkip;
  39 extern float fps_skip;
  40
  41 static int get_cpu_ticks(void)
  42 {
  43         static unsigned long last_utime;
  44         static int fd;
  45         unsigned long utime, ret;
  46         char buf[128];
  47
  48         if (fd == 0)
  49                 fd = open("/proc/self/stat", O_RDONLY);
  50         lseek(fd, 0, SEEK_SET);
  51         buf[0] = 0;
  52         read(fd, buf, sizeof(buf));
  53         buf[sizeof(buf) - 1] = 0;
  54
  55         sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu", &utime);
  56         ret = utime - last_utime;
  57         last_utime = utime;
  58         return ret;
  59 }
  60
  61 static void print_fps(void)
  62 {
  63         if (pl_fbdev_bpp == 16)
  64                 pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
  65 }
  66
  67 static void print_cpu_usage(void)
  68 {
  69         if (pl_fbdev_bpp == 16)
  70                 pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
  71 }
  72
  73 void *pl_fbdev_set_mode(int w, int h, int bpp)
  74 {
  75         void *ret;
  76
  77         if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
  78                 return pl_fbdev_buf;
  79
  80         pl_fbdev_w = w;
  81         pl_fbdev_h = h;
  82         pl_fbdev_bpp = bpp;
  83
  84         vout_fbdev_clear(layer_fb);
  85         ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
  86         if (ret == NULL)
  87                 fprintf(stderr, "failed to set mode\n");
  88         else
  89                 pl_fbdev_buf = ret;
  90
  91         menu_notify_mode_change(w, h, bpp);
  92
  93         return pl_fbdev_buf;
  94 }
  95
  96 void *pl_fbdev_flip(void)
  97 {
  98         flip_cnt++;
  99
 100         if (pl_fbdev_buf != NULL) {
 101                 if (g_opts & OPT_SHOWFPS)
 102                         print_fps();
 103                 if (g_opts & OPT_SHOWCPU)
 104                         print_cpu_usage();
 105         }
 106
 107         // let's flip now
 108         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 109         return pl_fbdev_buf;
 110 }
 111
 112 int pl_fbdev_open(void)
 113 {
 114         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 115         omap_enable_layer(1);
 116         return 0;
 117 }
 118
 119 void pl_fbdev_close(void)
 120 {
 121         omap_enable_layer(0);
 122 }
 123
 124 static void update_input(void)
 125 {
 126         int actions[IN_BINDTYPE_COUNT] = { 0, };
 127
 128         in_update(actions);
 129         if (in_type == PSE_PAD_TYPE_ANALOGPAD)
 130                 in_update_analogs();
 131         if (actions[IN_BINDTYPE_EMU] & PEV_MENU)
 132                 stop = 1;
 133         in_keystate = actions[IN_BINDTYPE_PLAYER12];
 134
 135 #ifdef X11
 136         extern int x11_update_keys(void);
 137         in_keystate |= x11_update_keys();
 138 #endif
 139 }
 140
 141 #define MAX_LAG_FRAMES 3
 142
 143 #define tvdiff(tv, tv_old) \
 144         ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
 145 // assumes us < 1000000
 146 #define tvadd(tv, us) { \
 147         tv.tv_usec += us; \
 148         if (tv.tv_usec >= 1000000) { \
 149                 tv.tv_usec -= 1000000; \
 150                 tv.tv_sec++; \
 151         } \
 152 }
 153
 154 /* called on every vsync */
 155 void pl_frame_limit(void)
 156 {
 157         static struct timeval tv_old, tv_expect;
 158         static int vsync_cnt_prev;
 159         struct timeval now;
 160         int diff;
 161
 162         vsync_cnt++;
 163
 164         /* doing input here because the pad is polled
 165          * thousands of times per frame for some reason */
 166         update_input();
 167
 168         pcnt_end(PCNT_ALL);
 169         gettimeofday(&now, 0);
 170
 171         if (now.tv_sec != tv_old.tv_sec) {
 172                 diff = tvdiff(now, tv_old);
 173                 vsps_cur = 0.0f;
 174                 if (0 < diff && diff < 2000000)
 175                         vsps_cur = 1000000.0f * (vsync_cnt - vsync_cnt_prev) / diff;
 176                 vsync_cnt_prev = vsync_cnt;
 177                 flips_per_sec = flip_cnt;
 178                 flip_cnt = 0;
 179                 tv_old = now;
 180                 if (g_opts & OPT_SHOWCPU)
 181                         tick_per_sec = get_cpu_ticks();
 182         }
 183 #ifdef PCNT
 184         static int ya_vsync_count;
 185         if (++ya_vsync_count == PCNT_FRAMES) {
 186                 pcnt_print(vsps_cur);
 187                 ya_vsync_count = 0;
 188         }
 189 #endif
 190
 191         tvadd(tv_expect, pl_frame_interval);
 192         diff = tvdiff(tv_expect, now);
 193         if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
 194                 //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
 195                 tv_expect = now;
 196                 diff = 0;
 197         }
 198
 199         if (!(g_opts & OPT_NO_FRAMELIM) && diff > pl_frame_interval) {
 200                 // yay for working usleep on pandora!
 201                 //printf("usleep %d\n", diff - pl_frame_interval / 2);
 202                 usleep(diff - pl_frame_interval / 2);
 203         }
 204
 205         plugin_skip_advice = 0;
 206         if (UseFrameSkip && diff < -pl_frame_interval) {
 207                 // P.E.Op.S. makes skip decision based on this
 208                 fps_skip = 1.0f;
 209                 plugin_skip_advice = 1;
 210         }
 211
 212         pcnt_start(PCNT_ALL);
 213 }
 214
 215 static void pl_text_out16_(int x, int y, const char *text)
 216 {
 217         int i, l, len = strlen(text), w = pl_fbdev_w;
 218         unsigned short *screen = (unsigned short *)pl_fbdev_buf + x + y * w;
 219         unsigned short val = 0xffff;
 220
 221         for (i = 0; i < len; i++, screen += 8)
 222         {
 223                 for (l = 0; l < 8; l++)
 224                 {
 225                         unsigned char fd = fontdata8x8[text[i] * 8 + l];
 226                         unsigned short *s = screen + l * w;
 227                         if (fd&0x80) s[0] = val;
 228                         if (fd&0x40) s[1] = val;
 229                         if (fd&0x20) s[2] = val;
 230                         if (fd&0x10) s[3] = val;
 231                         if (fd&0x08) s[4] = val;
 232                         if (fd&0x04) s[5] = val;
 233                         if (fd&0x02) s[6] = val;
 234                         if (fd&0x01) s[7] = val;
 235                 }
 236         }
 237 }
 238
 239 void pl_text_out16(int x, int y, const char *texto, ...)
 240 {
 241         va_list args;
 242         char    buffer[256];
 243
 244         va_start(args, texto);
 245         vsnprintf(buffer, sizeof(buffer), texto, args);
 246         va_end(args);
 247
 248         pl_text_out16_(x, y, buffer);
 249 }
 250
 251 static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 252 {
 253         *x = g_layer_x;
 254         *y = g_layer_y;
 255         *w = g_layer_w;
 256         *h = g_layer_h;
 257 }
 258
 259 const struct rearmed_cbs pl_rearmed_cbs = {
 260         pl_get_layer_pos,
 261         pl_fbdev_open,
 262         pl_fbdev_set_mode,
 263         pl_fbdev_flip,
 264         pl_fbdev_close,
 265         &plugin_skip_advice,
 266 };
 267
 268 /* watchdog */
 269 static void *watchdog_thread(void *unused)
 270 {
 271         int vsync_cnt_old = 0;
 272         int seen_dead = 0;
 273         int sleep_time = 5;
 274
 275 #ifndef NDEBUG
 276         // don't interfere with debug
 277         return NULL;
 278 #endif
 279         while (1)
 280         {
 281                 sleep(sleep_time);
 282
 283                 if (stop) {
 284                         seen_dead = 0;
 285                         sleep_time = 5;
 286                         continue;
 287                 }
 288                 if (vsync_cnt != vsync_cnt_old) {
 289                         vsync_cnt_old = vsync_cnt;
 290                         seen_dead = 0;
 291                         sleep_time = 2;
 292                         continue;
 293                 }
 294
 295                 seen_dead++;
 296                 sleep_time = 1;
 297                 if (seen_dead > 1)
 298                         fprintf(stderr, "watchdog: seen_dead %d\n", seen_dead);
 299                 if (seen_dead > 4) {
 300                         fprintf(stderr, "watchdog: lockup detected, aborting\n");
 301                         // we can't do any cleanup here really, the main thread is
 302                         // likely touching resources and would crash anyway
 303                         abort();
 304                 }
 305         }
 306 }
 307
 308 void pl_start_watchdog(void)
 309 {
 310         pthread_attr_t attr;
 311         pthread_t tid;
 312         int ret;
 313
 314         pthread_attr_init(&attr);
 315         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 316
 317         ret = pthread_create(&tid, &attr, watchdog_thread, NULL);
 318         if (ret != 0)
 319                 fprintf(stderr, "could not start watchdog: %d\n", ret);
 320 }
 321